The next version of Fedora, Fedora 12, will integrate a Moblin Desktop Environment. It can be easily "groupinstalled" via the yum package manager. The environment has already been added to the Constantine alpha release of Fedora 12 and to Fedora's "Rawhide" development branch. They're seeking testers to "make it great" for the final release of Fedora 12, which will be released in early November.